EVIDENCE FOR TEMPERATURE-DEPENDENT ANTIFERROMAGNETIC CORRELATION LENGTH IN HIGH-T-C CU OXIDES

被引：10

作者：

ITOH, Y ^{[1
]}

HAYASHI, A ^{[1
]}

UEDA, Y ^{[1
]}

机构：

[1] UNIV TOKYO, INST SOLID STATE PHYS, TOKYO 106, JAPAN

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1995年 / 64卷 / 08期

关键词：

ELECTRON CORRELATION; ANTIFERROMAGNETIC CORRELATION LENGTH; HIGH T; SUPERCONDUCTOR; NMR; EXPERIMENT;

D O I：

10.1143/JPSJ.64.3072

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the temperature(T)-dependent anisotropy r(= W-63(ab)/(63) W-cc) Of the planar Cu-63 nuclear spin-lattice relaxation rates W-63(a) (alpha=ab, cc) in the high-T-c Cu oxides, YBa2Cu4O8, YBa2Cu3O6.96 and Tl2Ba2CuO6+delta, from around T-c up to about 300 K. We discuss within the spin-fluctuation model that the anisotropy r is dependent only on the antiferromagnetic correlation length xi and that its T-dependence for the lightly-doped material is different from that of the over-doped ones. We provide the T-dependent anisotropy r as direct evidence of the T-dependent xi.

引用

页码：3072 / 3081

页数：10

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